public class btest67 {
    public static void main(String[] args) {
        int[] arr ={1,2,3,4,5};
        String str = btest66.printArray(arr);
        System.out.println(str);
        double[] arr2 = {1.5,2.2,3.4,7.8};
        double d = btest66.getAverage(arr2);
        System.out.println(d);

    }
}
